Dave (and others), Looking again at that C-V365-X3, it appears as if each gang is 365pf fully meshed. The website is vague. So, that won't work for fine tuning. Sorry. Try something like BC12332 http://www.oselectronics.com/ose_p96.htm which should give slightly better fine tuning depending on the gangs you switch in. Kevin's method in his article seems to be the best way to go for fine tuning.
73, Chris -----Original Message----- From: [email protected] [mailto:[email protected]]on Behalf Of Chris Knight Sent: Thursday, January 08, 2009 10:38 PM To: HASCALL, DAVID CIV DFAS; [email protected] Subject: Re: [IRCA] Antenna Projects (Crate Loop) MORE QUESTIONS Dave, EBay has been a pretty good source for wire. I usually buy spools of 1000' or less and dedicate some of them to antenna projects and others for Beverage Antennas, etc. An observation on "fine tuning": You'll notice the 0-365pF single gang capacitor is "touchier" when less capacitance is needed at the higher BCB frequencies. As you tune the loop for stations under 700kHz it becomes easier to tune and a lot less touchy. So, what I've done in the past is use a multi-gang capacitor such as the C-V365-X3 available at Antique Electronic Supply http://www.tubesandmore.com/ for $26.96. You can tie 2 of the gangs together in parallel and switch them in using a toggle-type switch or you can switch each gang in individually as needed using 2 switches. This gives each gang the full tuning "range" of the capacitor. Hence, you get better fine tuning. 73. Chris _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
